Home / 2,006.66-2,768.56-1,220.42

Finding the Fourth Proportional to 2,006.66, 2,768.56 and 1,220.42

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Solution

The fourth proportional to 2,006.66, 2,768.56 and 1,220.42 is: 1,683.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.66 : 2,768.56 = 1,220.42 : x
  2. Step 2: Convert to fraction form
    2,006.66/2,768.56 = 1,220.42/x
  3. Step 3: Cross multiply
    2,006.66x = 2,768.56 × 1,220.42
  4. Step 4: Simplify right side
    2,006.66x = 3,378,789.10
  5. Step 5: Solve for x
    x = 3,378,789.10/2,006.66
  6. Step 6: Final answer
    x = 1,683.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.